Method and filter for erasing hidden data

Abstract

A method and a filter in telecommunication systems characterized in that the signal in the packet communications link is subject to normalization through restoration of default transport frame values, thus eliminating hidden data.

1 . A method of filtration in telecommunication systems
 characterized in that   
       the signal on the packet telecommunications channel is subject to normalization by restoring the default values of the transport frame thus eliminating hidden data. 
     
     
         2 . The method according to  claim 1  wherein normalization is implemented to data in frame headers of the signal stream in the telecommunications channel. 
     
     
         3 . The method according to  claim 1  wherein normalization is implemented in relation to checksums of frames through their re-calculation according to individual hash function. 
     
     
         4 . The method according to  claim 1  wherein normalization is implemented for at least one of the OSI model layers, preferably for all layers, and the normalization process is controlled to ensure buffering to adjust delays between frames. 
     
     
         5 . The method according to  claim 1  wherein normalization is implemented for at least one frame, preferably for each frame of signal in the telecommunications channel. 
     
     
         6 . The method according to  claim 1  wherein the signal in the telecommunications channel in the physical layer is subject to time-normalization through buffering and sending packets with uniform delay. 
     
     
         7 . A filter for telecommunication systems
 characterized in that   
       it contains a module suitable for normalization of signal in the packet communication channel through restoring default values of the transport frame to eliminate hidden data. 
     
     
         8 . The filter according to  claim 7  wherein the filter module is suitable for normalization of data in frame headers of the signal stream in the telecommunications channel. 
     
     
         9 . The filter according to  claim 7  wherein the filter is suitable for normalization of checksums of frames through their re-calculation according to individual hash function. 
     
     
         10 . The filter according to  claim 7  wherein that the filter is suitable for normalization of at least one of the OSI model layers, preferably for all layers, however, the filter is suitable to control the normalization process in order to ensure buffering to adjust delays between frames. 
     
     
         11 . The filter according to  claim 7  wherein the filter is suitable for normalization of at least one frame, which is beneficial for each frame of signal in the telecommunications channel. 
     
     
         12 . The filter according to  claim 7  wherein the filter is suitable for time normalization of the signal in the telecommunications link in the physical layer through buffering and sending packets with uniform delay.